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1. A method of sharing data, the method comprising:
generating a first physical token and a second physical token, each of the first and the second physical tokens comprising an identifier and an encryption key, wherein the identifier is associated with a location for storing encrypted data, after generating the first and the second physical tokens, receiving, by one of one or more computer systems, information identifying data to be shared; receiving, by the one of the one or more computer systems, information read from the first physical token, the information comprising the identifier and the encryption key; encrypting, by the one of the one or more computer systems, the data to be shared using the encryption key read from the first physical token to generate encrypted data; causing, by the one of the one or more computer systems, the encrypted data to be stored using the identifier; obtaining the identifier and encryption key from the second physical token; accessing the encrypted data using the identifier obtained from the second physical token; decrypting the encrypted data using the encryption key obtained from the second physical token to produce decrypted data; and enabling access to the decrypted data.
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